{"id":15737,"date":"2019-12-28T12:04:53","date_gmt":"2019-12-28T06:34:53","guid":{"rendered":"https:\/\/kseebsolutions.guru\/?p=15737"},"modified":"2021-07-02T15:33:48","modified_gmt":"2021-07-02T10:03:48","slug":"2nd-puc-computer-science-model-question-paper-4","status":"publish","type":"post","link":"https:\/\/kseebsolutions.guru\/2nd-puc-computer-science-model-question-paper-4\/","title":{"rendered":"2nd PUC Computer Science Model Question Paper 4 with Answers"},"content":{"rendered":"

Students can Download 2nd PUC Computer Science Model Question Paper 4 with Answers, Karnataka 2nd PUC Computer Science Model Question Papers with Answers <\/a>helps you to revise the complete Karnataka State Board Syllabus and score more marks in your examinations.<\/p>\n

Karnataka 2nd PUC Computer Science Model Question Paper 4 with Answers<\/h2>\n

Time: 3 Hrs. 15 Min.
\nMax. Marks: 70<\/p>\n

PART-A<\/p>\n

I. Each question carries one mark. (10 \u00d7 1 =10)<\/span><\/p>\n

Question 1.
\nName the two types of UPS.
\nAnswer:
\nThe two types of UPS are online UPS and standby UPS.<\/p>\n

Question 2.
\nWhat are universal gates?
\nAnswer:
\nUniversal gate is a gate using which ail the basic gates can be designed. NAND and NOR are universal gates.<\/p>\n

Question 3.
\nGive the formula to calculate Base address of one-dimensional array in memory.
\nAnswer:
\nThe formula to calculate the memory address of an array element is Base_Address + W ( Position – LB ) Where W is number of words per memory cell, position is location of array element for which memory address is calculated, LB is Lower bound (index) of an array.<\/p>\n

Question 4.
\nWhat do you mean by access specifier ‘private’?
\nAnswer:
\nPrivate access means a member data can only be accessed by the member function of that class only.<\/p>\n

Question 5.
\nWhat is static memory?
\nAnswer:
\nThe fixed size of memory allocation and cannot be altered during runtime is called static memory allocation.<\/p>\n

Question 6.
\nWhat is a field?
\nAnswer:
\nEach column in a table is identified by a distinct header is called a field.<\/p>\n

Question 7.
\nWhat is topology?
\nAnswer:
\nIt is the geometric arrangement of a computer system in network. Common topologies include a Linear bus, star, ring, and ring.<\/p>\n

Question 8.
\nWhat is cyber law?
\nAnswer:
\nThe cyber law has been referred to as the Law of the Internet. Cyberlaw is the part of the overall legal system that deals with the Internet, cyberspace, and their respective legal issues.<\/p>\n

\"KSEEB<\/p>\n

Question 9.
\nWhat is domain affiliation?
\nAnswer:
\nA domain affiliation means the type of domain whether it is commercial (.com), education (.edu) or government (.gov), etc.,<\/p>\n

Question 10.
\nWhat is XML?
\nAnswer:
\nXML is a extended Markup Language for documents containing structured information. XML is a text-based markup language becoming the standard for data interchange on the web.<\/p>\n

PART – B<\/p>\n

II. Each question carries two marks. (5 \u00d7 2=10)<\/span><\/p>\n

Question 11.
\nUse duality theorem to derive another boolean relation from A + A’B = A+B.
\nAnswer:
\n\"2nd<\/p>\n

Question 12.
\nGive an example for a Boolean expression the sum of minterms form and product of maxterm form.
\nAnswer:
\nThe example for boolean expression in the sum of minterms form is X’Y’ + XY’ +XY =Z. The example for Boolean expression in the product of max terms form is x’+y’. x+y’ + x+y =z.<\/p>\n

Question 13.
\nExplain polymorphism.
\nAnswer:
\nThe polymorphism is ability of an object to take more than one form in different instances. For example, one function name can be used for different purposes. Similarly, same operator can be used for different operations. There are two types one is the “compile-time polymorphism” and other one is the “run-time polymorphism\u201d.<\/p>\n

Question 14.
\nWhat is a destructor? Which operator is used with destructor?
\nAnswer:
\nIt is a special member function that destroys the objects that have been created by a constructor when they no longer required. The operator tilde sign (~) is used with destructor.<\/p>\n

Question 15.
\nName the streams generally used for file I\/O.
\nAnswer:
\nThe streams generally used for file I\/O is input stream, output stream, and error stream.<\/p>\n

Question 16.
\nWhat is data mining?
\nAnswer:
\nIt is the process of discovering interesting knowledge, such as patterns, associations, changes, anomalies from large amounts of data stored in databases using pattern recognition technologies as well as statistical and mathematical techniques.<\/p>\n

Question 17.
\nHow do you modify the column name and width for existing table?
\nAnswer:
\nSyntax:
\nAlter table tablename modify (columnname datatype (size), columnname datatype(size)..);
\nExample:
\nAlter table student modify ( studentname varchar2(50) );<\/p>\n

\"KSEEB<\/p>\n

Question 18.
\nWhat is topology? Mention the common topologies.
\nAnswer:
\nTopology is the geometric arrangement of a computer system in network. Common topologies include a bus, star, ring and ring topologies.<\/p>\n

PART – C<\/p>\n

III. Each question carries three marks. (5 \u00d7 3 = 15)<\/span><\/p>\n

Question 19.
\nExplain Integrated Digital Electronics (IDE) port, Accelerated Graphics Port (AGP) and Small Computer System Interface (SCSI) port.
\nAnswer:
\n1. Integrated Digital Eelectronics (IDE) port:
\nIDE devices like Harddisk drives, CD-ROM drives are connected via 40-pin ribbon cable.<\/p>\n

2. Accelerated Graphics Port (AGP):
\nThe AGP is an advanced port designed for Video cards and 3D accelerators designed by Intel. AGP is to provide enhanced graphic accelerator cards, thus enhancing the picture quality of the screen.<\/p>\n

3. Small Computer System Interface (SCSI) port:
\nThis port is used for adding external devices such as high-speed hard disks, CD-ROM drives, scanners etc., These ports are expensive but does fast data transfers.<\/p>\n

Question 20.
\nExplain basic gates.
\nAnswer:
\nThe three basic logic gates are NOT, OR and AND gate.
\nThe NOT or inverter is a gate with only one input and one output. The standards symbol for NOT gate is
\nThe truth table for
\n1. NOT gate:
\n\"2nd<\/p>\n

The truth table for NOT gate:<\/p>\n

\"2nd
\n2. OR gate:
\nThe OR gate has two or more input signals but only one output. If any of the input signal is high the output is high.
\nThe standard symbol for OR gate is
\n\"2nd<\/p>\n

The truth table for OR gate.
\n\"2nd
\n<\/span><\/p>\n

3. AND gate:
\nThe AND gate has two or more input signals with one output. When all the inputs are high, then output is high. The standard symbol of AND gate is<\/p>\n


\n\"2nd
\n<\/span><\/p>\n

The truth table for AND gate:<\/p>\n


\n\"2nd
\n<\/span><\/p>\n

Question 21.
\nExplain the memory representation of queue using one-dimensional array.
\nAnswer:
\nLet Q be a linear array of size N.
\nThe pointer FRONT contains location of front element of the queue (element to be deleted)
\nThe pointer REAR contains location of rear element of the queue (recently added element)
\nThe queue is empty when FRONT = 0
\nThe queue is full when FRONT = N
\nTo add element, REAR = REAR + 1
\nTo delete element, FRONT = FRONT + 1<\/p>\n

Question 22.
\nWhat is the relationship between string and pointers? Give example.
\nAnswer:
\nThere is a relationship between string and pointers. In C++ string means character array. When a character array is declared then only its first element address is stored. The rest of the elements can be accessed with the help pointer to character array. This is explained with the following example;
\n\"2nd
\nEvery increment of cptr and printing the value at the location of pointer gives the next element of the character array.<\/p>\n

\"KSEEB<\/p>\n

Question 23.
\nMention the methods of opening files within C++. Discuss anyone.
\nAnswer:
\nThe methods of opening file within C++ program<\/p>\n